Sakuramatsuri is a general term for any festival geared towards catching the brief moment when the sakura (cherry blossoms) are the most pretty.

This particular one happens at the Brooklyn Botanical Gardens.

They are quite fun -- Lots of events like:

bbg.org Wrote:contemporary and traditional Japanese music and dance, taiko drumming, ikebana flower arranging, Japanese DJs, presentations on Japanese manga art, tea ceremonies, and workshops for all ages.